Loom stop motion



June 2, 1936. p PIA-[Tl 2,043,116

LOOM STOP MOTION Filed June 12, 1935 3 Sheets-Sheet 1 R 7? Plaza" A llo rney June 2, 1936. p. mm 2,043,116

LOOM STOP MOTION Filed June 12, 1955 5 Sheets-Sheet 5 Invenlor A llomey Patented June 2, 1936 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to a stop motion for looms, the general object of the invention being to provide means for stopping the loom if for any reason a harness frame should fall.

This invention also consists in certain other features of construction and in the combination and arrangement of several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a fragmentary front view of portions of a loom provided with the invention.

Figure 2 is a top plan view of the portions shown in Figure 3.

Figure 3 is a fragmentary side view.

Figure 4 is a view of the brake rod of the loom.

Figure 5 is a view of the arm for the brake knock off rod.

Figure 6 is a section on the line 6-6 of Figure 2.

Figure '7 is a View of the push rod.

In these drawings the numeral I indicates a part of the head of the loom which carries the pulleys 2 for the flexible members 3 which are operated from the dobby levers 4, the flexible members being connected to the harness frame 5 which is pulled downwardly by a spring 6 having one end connected to the frame and the other to a part of the loom. A bracket 1 is connected to each side part 8 of the loom and each bracket carries an elongated channel member 9, the upstanding limbs of which are formed with the openings H which form guideways for a cross bar H, the ends of which extend into the openings. Springs l2 tend to hold the cross bar against the upper walls of the openings and a lever I3 is pivoted to a bracket l4 supported on an intermediate part of each bracket 7 and has its inner end fastened to the central part of each cross piece or bar II. A set screw I5 is adjustably carried by the inner portion of each lever l3 for limiting downward movement of the lever by striking a part of the bracket 1. A push rod I6 is supported for vertical movement by a bracket I! on each part 8 and the lower end of this push rod is bent as at I8 and extends into a longitudinally extending slot [9 in the outer end of each lever 13 so that rocking movement of the lever imparts a reciprocatory movement to the push rod. The upper end of each push rod is bent as at 20 so that when the rod moves upwardly it will engage a link 2l pivoted to a lever 22 by a pin 23, this upward movement of the link under the action of the push rod opening a switch 24 which controls the circuit to the motor of the loom and this switch is the circuit breaker used with the drop wires of the loom. The link 2| is connected with the arm of the switch or circuit breaker by a link 25. This upward movement of the link 2| places it in position to be engaged by the adjustable knock off stud 26 on the leg 21 of the lay 28 so that the stud engaging the link will move the lever 22 on its pivot 29 and this movement of the lever 22 will cause the brake knock off rod 30 to press the adjustable collar 3| thereof against the curved end 32 of the brake rod 33 supported from the breast rail 34. This movement of the brake rod will apply the brake shown generally at 35 in Figure 3 through means of the link 36. Thus it will be seen that if a harness frame should drop for any reason one end or the other or both will engage one or both of the cross bars II which will rock a lever 13, thus pushing upwardly the rod l6 which causes the link 21 to open the circuit, through the means of the circuit breaker 24, to the motor thus stopping the loom and this movement of the link 2| places it in the path of the stud 26 of the lay so that the lever 22 is moved on its pivot to cause the rod 30 and the brake rod 33 to apply the brakes to stop the loom.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What is claimed is:

In a stop motion for looms, an inwardly extending bracket connected to a side of the loom, an elongated member arranged at right angles to the bracket and having an intermediate part connected with the inner end of the bracket, said member having upstanding end portions provided with longitudinally extending slots, a lever arranged above the bracket and pivotally supported therefrom, a cross piece having an intermediate part connected with the inner end of the lever, with the ends of the cross piece passing into the slots, a vertically arranged rod supported for sliding movement from said side part of the loom and having its lower end connected with the outer end of the lever, whereby when a harness frame drops upon the cross piece, the lever will be tilted to raise the rod and means actuated by said raising of the rod for stopping the loom.

PASQUALE PIA'ITI. 

